T HE A RGO A map can show you how far it is by sea from Iolcos in Aeolia to Colchis on the shores of the Black Sea. It cannot show in detail the natural and unnatural obstacles that made such a voyage so uniquely hazardous. Jason’s first requirement was a suitably hardy and well-equipped vessel for the journey. He chose as his shipwright ARGUSfn19, and the unique vessel that he built became known as the